1KWP

Crystal Structure of MAPKAP2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structure of Mitogen-activated Protein Kinase-activated Protein (MAPKAP) Kinase 2 Suggests a Bifunctional Switch That Couples Kinase Activation with Nuclear Export

Meng, W.Swenson, L.L.Fitzgibbon, M.J.Hayakawa, K.Ter Haar, E.Behrens, A.E.Fulghum, J.R.Lippke, J.A.

(2002) J.Biol.Chem. 277: 37401-37405

  • DOI: 10.1074/jbc.C200418200

  • PubMed Abstract: 
  • MAPK-activated protein kinase 2 (MAPKAPK2), one of several kinases directly phosphorylated and activated by p38 MAPK, plays a central role in the inflammatory response. The activated MAPKAPK2 phosphorylates its nuclear targets CREB/ATF1, serum respon ...

    MAPK-activated protein kinase 2 (MAPKAPK2), one of several kinases directly phosphorylated and activated by p38 MAPK, plays a central role in the inflammatory response. The activated MAPKAPK2 phosphorylates its nuclear targets CREB/ATF1, serum response factor, and E2A protein E47 and its cytoplasmic targets HSP25/27, LSP-1, 5-lipoxygenase, glycogen synthase, and tyrosine hydroxylase. The crystal structure of unphosphorylated MAPKAPK2, determined at 2.8 A resolution, includes the kinase domain and the C-terminal regulatory domain. Although the protein is inactive, the kinase domain adopts an active conformation with aspartate 366 mimicking the missing phosphorylated threonine 222 in the activation loop. The C-terminal regulatory domain forms a helix-turn-helix plus a long strand. Phosphorylation of threonine 334, which is located between the kinase domain and the C-terminal regulatory domain, may serve as a switch for MAPKAPK2 nuclear import and export. Phosphorylated MAPKAPK2 masks the nuclear localization signal at its C terminus by binding to p38. It unmasks the nuclear export signal, which is part of the second C-terminal helix packed along the surface of kinase domain C-lobe, and thereby carries p38 to the cytoplasm.


    Organizational Affiliation

    Vertex Pharmaceuticals Inc., Cambridge, Massachusetts 02139, USA. wuyi_meng@vpharm.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAP Kinase Activated Protein Kinase 2
A, B
400Homo sapiensMutation(s): 0 
Gene Names: MAPKAPK2
EC: 2.7.11.1
Find proteins for P49137 (Homo sapiens)
Go to Gene View: MAPKAPK2
Go to UniProtKB:  P49137
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download SDF File 
Download CCD File 
A, B
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.233 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 143.944α = 90.00
b = 143.944β = 90.00
c = 90.273γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
CNXphasing
REFMACrefinement
CCP4data scaling
MOSFLMdata reduction
CNXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-09-18
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model
  • Version 1.4: 2018-07-04
    Type: Advisory, Data collection, Derived calculations